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You mentioned you can open and close the exhaust flaps manually with bimmercode app...is there a big difference from when closed and open?
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2017 M2|LBB|Manual|Executive Package|Fabspeed SportCat|Dinan S4 Tuner w Big Turbo|Remus Exhaust|Dinan Intake|Dinan Intercooler|Dinan LPFP Upgrade Kit|Ultimate Clutch Pedal|BMS Clutch Stop
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